Search a number
-
+
1211221011002 = 25979979128341
BaseRepresentation
bin10001101000000010011…
…001011110101000111010
311021210101002000112022112
4101220002121132220322
5124321040034323002
62324232141452322
7153336120502562
oct21500231365072
94253332015275
101211221011002
11427748758802
121768ab5710a2
138a2aa244ca2
14428a28c9da2
152178ed84852
hex11a0265ea3a

1211221011002 has 16 divisors (see below), whose sum is σ = 1847662768800. Its totient is φ = 595333838160.

The previous prime is 1211221010981. The next prime is 1211221011079. The reversal of 1211221011002 is 2001101221121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9373352 + ... + 9501692.

It is an arithmetic number, because the mean of its divisors is an integer number (115478923050).

Almost surely, 21211221011002 is an apocalyptic number.

1211221011002 is a deficient number, since it is larger than the sum of its proper divisors (636441757798).

1211221011002 is a wasteful number, since it uses less digits than its factorization.

1211221011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208381.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211221011002 its reverse (2001101221121), we get a palindrome (3212322232123).

The spelling of 1211221011002 in words is "one trillion, two hundred eleven billion, two hundred twenty-one million, eleven thousand, two".

Divisors: 1 2 59 118 79979 128341 159958 256682 4718761 7572119 9437522 15144238 10264584839 20529169678 605610505501 1211221011002